发明申请
- 专利标题: Slow-Shift SPM Valve
- 专利标题(中): 慢速SPM阀门
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申请号: US14704771申请日: 2015-05-05
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公开(公告)号: US20160153578A1公开(公告)日: 2016-06-02
- 发明人: James Ray Landrith, II , Frank B. Springett , Eric Trevor Ensley , Jonathan Lewis Buelow , James W. Weir , Travis James Miller
- 申请人: NATIONAL OILWELL VARCO, L.P.
- 主分类号: F16K31/124
- IPC分类号: F16K31/124 ; F16K27/04 ; E21B34/02 ; F16K11/065
摘要:
The disclosure provides devices and methods for controlling the actuation rates of SPM valves by bi-directionally controlling the fluid which actuates the valve or by maintaining enclosed volumes which communicate with each other thru predetermined restrictions as the valve actuates. These enclosed volumes can be completely isolated, depth compensated, share fluid with the pilot actuating fluid, or utilize the main system fluid. The restrictions can be modified to increase or decrease the actuation rates of the SPM valve. The disclosure also provides control over the main system fluid passage opening and closing positions as well as how rapidly the flow passage areas increase or decrease while opening or closing the valve.
公开/授权文献
- US10337638B2 Slow-shift SPM valve 公开/授权日:2019-07-02
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